Universal joint.



PATENTED APR. 17, 1906.

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w WW J. v. KOROKNAY. UNIVERSAL JOINT.

APPLICATION FILED JULY 1. 1905.

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Specification of Letters Patent.

iPatented April 17, 1906.

Application filed July 1, 1905. Serial No. 267895- To all whom, it mayconcern:

Be it known that l, JULIUS v. KOROKNAY, engineer, a citizen of theKingdom of Austrier-Hungary, residing at Raab, Austria-Hum? gary, haveinvented certain new and useful Improvements in Universal Joints forMotor- Vehicles, of which the following is a specification, referencebeing had therein to the accompanying drawings,

This invention has for its object improvemerits in universal jointsemployed in motorvehicles for mounting the steering-wheels.

. When a universal joint has been in use for a long time, it is foundthat owing to the very considerable strain, but especially as a resultof the friction arising in the shoes for the pins, these latter'wearcomparatively quickly, as hitherto these 'oint-pins have been made inone piece with t elengths of shaft. When it is necessary to change orrenew the pins, it is also necessary to renew the much more costlylengths of shaft.

\ The present invention relates to a par- I ticular constructional formin accordance with which the joint-pins are mounted rotatably andinterchangeably in the ends of the arms of the forks.

In Figures 1 and 2 of the accompanying drawing two sections, at rightangles to each other, of the novel form of universal joint areillustrated.

As shown in the figures, the forks 8, provided at the extremities of thelength of shaft a b, are bored, and these bores are lined with bushes z,of crucible steel. In these bushes are laced the pinsg, which arelikewise forme of hardened crucible steel, their outwardly-directed endsbeing formed square at h, and these square portions enter rectangularrecesses in the corresponding segments fd, of which the segments f areimmovably fixed to the ring 0, while the segments 11 are displaceable inthe direction of the longitudinal axis of the rin c. The pins arearranged radially of the sha s, as shown. The inwardly-directed ends ofthe joint-pinsg are turned con ically and each of them engages in aconicallybored shoe m, which presents externally the form of atriangular prism, the base of which is formed by a right-angledisosceles triangle, so that all four shoes m, which slide loosely oneupon the other, form'a prism of square cross-section. Owing to thisconstruction each pin 9 is maintained in place in a readilyinterchangeable manner, and the shoes m, belonging to the displaceablepins, may bedisplaced according to requirements relavetily to thosebelonging to the fixed pins.

It will of course be understood that the form of the shoes m may vary,the essential point being only that each of. them should present uponits outer side a recess for the reception of the in and that all theshoes should be displaceable relatively to each other and mutuallysupport each other.

What ll claim is- In a device of the character described, thecombination with the shafts having forked ends, of joint-pins carried bythe forks and arranged radially of the shafts and having conical innerends, and prism-shaped shoes arran ed relatively to each other asdescribed, said s oes having a bearing upon and being -movable withrespect to each other as set forth, and each shoe being provided with aconical seat receiving the conical end of a joint-pin.

In testimony whereof I hereunto afiix my s1gnature in presence of twowitnesses.

JULIUS v. KOROKNAY.

